I put Perfect Pass in mine in 2008, Upgraded to version 9.2 and Zbox in 2017. Over the winter I replaced the entire steering system with the one used in 1998 and newer models, except for the rudder itself. Changed the helm, tilt, cable, clamp block assembly, and repacked the rudder port. I replaced the second speedometer with a GPS one. The original was faded. The pickups were about to fail too. Wanted something more accurate to pull barefooters. It is easier to drive manually while reading an analog face. If money allows I may upgrade to an ACME prop. Trying to improve the speed holding to make the pull feel like the newer boats. The newer props don't slip as much because they have better grip of the water.